题目内容
What is the SI unit of pressure?
查看答案
搜索结果不匹配？点我反馈
更多问题
Pressure is the ratio of ------ to ---------- .
The specific gravity of a fluid, designated as SG, is defined as the ratio of the density of the fluid to the density of water at some specified temperature. And SG has a unit of
The specific weight of a fluid, designated by the Greek symbol γ (gamma), is defined as its weight per unit volume. Thus, specific weight is related to density through the equation
The density of a fluid, designated by the Greek symbol (𝜌 rho), is defined as its mass per unit volume. In the BG system, (𝜌 rho) has units
微信支付 
支付宝支付